Penn State University: Pioneering Research and Resources

Penn State University (PSU) stands as a hub of innovation and academic excellence, consistently pushing boundaries in diverse fields. From groundbreaking research in bio-integrated electronics to fostering global collaborations in cacao research and providing comprehensive library resources, PSU demonstrates its commitment to advancing knowledge and serving the community. This article explores several facets of Penn State's contributions, showcasing its impact on science, culture, and education.

Bio-Integrated Electronics: Bridging Biology and Technology

DNA, nature’s most efficient storage mechanism, boasts the capacity to store approximately 215 million gigabytes of data per gram. This remarkable storage capability, if harnessed in electronics, promises more efficient data centers, faster data processing, and the ability to handle far more complex data sets. The challenge lies in integrating DNA, a biological material, with electronic components.

A team of Penn State researchers has made significant strides in overcoming this obstacle. According to Kavya S. Keremane, co-corresponding author and postdoctoral researcher in materials science and engineering at Penn State, "Biology and electronics are different domains. Bridging these two fields required developing an entirely new materials platform that allows them to function seamlessly together."

The Memristor: A Key Component

The researchers developed a memory resistor, or "memristor," which operates with minimal energy consumption. Unlike conventional resistors, which offer fixed resistance to current flow and lose information when power is removed, memristors retain the ability to allow current flow even after the power source is turned off. They can also remember the direction of prior current flow. This ability to store and process data in the same location mimics the function of neurons in the brain, potentially enabling simultaneous and more comprehensive data processing.

However, the researchers noted that sufficient storage and power are necessary for this technology to be effective. Without DNA's capability to densely pack and store data with very little energy use, the size and cost would be prohibitive for commercial applications.

The Role of DNA and Perovskite

To develop the device, the researchers applied silver nanoparticles to a layer of customized DNA sequences integrated with thin films of perovskite. This process, known as "doping," allows for the precise facilitation of specific material properties by applying a small nanoparticle to another material.

Unlike natural DNA, which consists of long, entangled strands, short, rigid synthetic DNA fragments enable architectural precision at the nanoscale. According to co-author Neela H. Yennawar, molecularly engineered DNA achieves a level of structural order, tunable electrical conductivity, and functional control that native DNA cannot deliver in thin films. "We can computationally determine exactly which sequences we need and how long they should be, and then we can rationally design them with synthetic DNA," Yennawar said.

The DNA doped with silver nanoparticles and perovskite creates bio-hybrid channels to funnel current flow. When the current was switched, the device responded accordingly. Stabilized by the precise DNA composition and structures linked to perovskite, the device consistently performed up to almost 250 degrees Fahrenheit and at room temperature for more than six weeks, exceeding the performance standards of current perovskite-based memory storage devices.

According to Keremane, "Using just the DNA or just perovskite alone did not produce near as robust a result as the combination." Bed Poudel added, "Nature has the solution - we just have to find it and apply it."

Implications for Artificial Intelligence

As the demand for artificial intelligence (AI) grows, there is a need for new strategies for low-power, high-storage devices. AI and future technologies will rely more and more on neuromorphic computing, which, similar to the human brain, can consider multiple inputs simultaneously and make decisions based on past experiences and future priorities.

Poudel explained that neuromorphic computing offers a pathway to more efficient and powerful AI systems. "Usually, it takes more power to store more information," Poudel said. The DNA-based memristor developed by the Penn State team represents a significant step towards overcoming this limitation.

The Spirit of Chocolate: A Global Collaboration

Penn State's commitment to global engagement extends to the realm of agriculture and culture through the Cacao and Chocolate Research Network (CCRN). The CCRN embodies how the University engages across the global south.

The "Spirit of Chocolate" installation seeks to capture the profound connection between cacao growers and the land, highlighting their craftsmanship and reverence for the crop. It also aims to amplify the voices of Indigenous cacao farmers and bring attention to the chocolate’s true origins and meaning, celebrating farmers’ dedication and cultural heritage through a blend of visual art, storytelling, and academic insight. The installation includes interviews with researchers and farmers, a replica of a historic cacao vessel, a living cacao tree, and other interpretive materials.

Penn State's Role in Cacao Research

Penn State’s long‑standing leadership in cacao and chocolate science is rooted in global interdisciplinary collaboration. At the core of CCRN is the endowed Program for the Molecular Biology of Cacao, which celebrates its 40th anniversary this year. Under the co‑leadership of Professors Mark Guiltinan and Siela Maximova, the program has become one of the world’s premier academic centers for cacao genetics, physiology, disease resistance, and crop improvement, delivering advances from somatic embryogenesis and functional genomics to CRISPR‑enabled trait development.

According to Maximova, "Penn State is a powerhouse for cacao and chocolate research, and the farmers are the primary beneficiaries. We continually seek opportunities to expand our work in the cacao space for the benefit of producers." The CCRN places high value not only on technical improvements but also on making them locally applicable and accessible.

Read also: History of the Block 'M'

Addressing Global Challenges

Although cacao originated in the Amazon basin, across what is now Ecuador, Peru, Brazil, and Colombia, its cultivation and trade now span the tropical world. This global spread brings global challenges.

For Maximova, who also serves as director for Latin America and the Caribbean at Penn State Global and a Latin America faculty fellow for Ag Sciences Global, CCRN exemplifies how the University engages across the global south. Maximova explained that Latin America is a priority region for Penn State Global, and the University has made a significant investment in the Americas Water, Energy, and Food (WEF) Nexus Alliance to deepen collaborative research and engagement.

"International collaborations are essential for university research and for making a real difference," Guiltinan said. "No single organization or country can address these challenges alone."

Penn State University Libraries: Resources for Academic Success

Penn State University Libraries provide extensive resources and services to support students, faculty, and staff in their academic pursuits. These resources range from traditional library services to cutting-edge technological tools.

Access to Information

The Libraries offer a vast collection of materials, including books, journals, databases, and multimedia resources. Many required texts are available in the Libraries’ collections, and users can borrow books for the entire semester. Librarians are available to provide guidance and support in navigating these resources, conducting research, and evaluating information.

Spaces for Learning

The Libraries provide a variety of study spaces to accommodate different learning styles and needs. These spaces include large tables in quiet study areas, lounges with soft furniture, reservable rooms and booths for groups, and assigned study carrels. Whether students prefer to study independently or collaborate with peers, the Libraries offer a conducive environment for academic work.

Tools for Research

The Libraries provide a variety of tools to facilitate the process of writing research papers at any level. These tools include citation management software, plagiarism detection services, and online research guides. Librarians offer workshops and individual consultations to help students develop their research skills and use these tools effectively.

Emerging Technologies

The Libraries are committed to providing access to emerging technologies that support teaching, learning, and research. These technologies include VR and AR equipment, tools for creating educational videos and podcasts, loanable electronic musical instruments accessible to novice and master musicians alike. The Libraries also offer 3D printing and scanning services, allowing users to create physical objects for academic projects or personal use.

Specialized Support

The Libraries offer specialized support for specific disciplines and research areas. For example, bioinformatics leverages computational tools and methodologies to decipher the complex language of biological data. Librarians can provide guidance on identifying how research shapes policy, patents, and the work of peers. Additionally, the Libraries offer resources and expertise on copyright, helping users understand their rights and responsibilities when using copyrighted materials.

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